<template>
  <div>
<!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
<!-- 卡片试图 -->
    <el-card>
<!-- 提示 -->
      <el-alert
        title="添加商品信息"
        type="info"
        :closable="false"
        center
        show-icon
      >
      </el-alert>
<!-- 步聚条 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        align-center
        finish-status="success"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

 <!-- tab栏区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="ruleFormRef"
        label-width="100px"
        :label-position="'top'"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
<!-- 商品信息 -->
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"> </el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"
                >
<!-- type='number' 数子 -->
              </el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number">
              </el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number">
              </el-input>
            </el-form-item>
  <!-- 商品分类三级选项 -->
            <el-form-item label="商品分类" prop="goods_cat">
<!-- 级联选择器 -->
              <el-cascader
                expand-trigger="hover"
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
   <!--商品参数  -->
          <el-tab-pane label="商品参数" name="1">
            <!-- 渲染表单的Item项 -->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
    <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  class="fuxiam_1"
                  :label="cb"
                  :key="i"
                  border
                  v-for="(cb, i) in item.attr_vals"
                >
                </el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
<!-- action 表示图片要上传到后台apl地址 -->
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
<!-- 富文本编辑器组件 -->
              <quill-editor v-model="addForm.goods_introduce"></quill-editor>
  <!-- 添加商品 -->
              <el-button type='primary' class="tj_an" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
<!-- 图片预览 -->
    <el-dialog
      title="图片预览"
      :visible.sync="previewVisible"
      width="50%"
    >
    <img :src="preciwPath" alt="" class="tu_yulan">
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'

export default {
  props: {},
  data() {
    return {
      activeIndex: "0",
      //添加商品的表单数据对象
      addForm: {
        goods_name: "", //商品名称
        goods_price: 0, //商品的价格
        goods_weight: 0, //商品的重量
        goods_number: 0, //商品的数量
        //商品所属的分类数组
        goods_cat: [],
        //图片的数据
        pics: [],
        //商品的详情描述
        goods_introduce:'',
        //商品的参数（数组），包含 动态参数 和 静态属性
        attrs:[],
      },
      //校验规则 tab栏
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      //商品分类列表 数据源
      catelist: [],
      cateProps: {
        label: "cat_name", //看到的属性
        value: "cat_id", //选中的值
        children: "children", //父子节点嵌套
      },
      //动态参数列表数据
      manyTableData: [],
      //静态属性列表数据
      onlyTableData: [],
      //上传图片的URL地址
      uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
      //图片上传组件的 headers 请求头对象
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      //预览窗口
      preciwPath: "",
      previewVisible:false
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    //获取所有商品分类数据
    async getCateList() {
      //数据请求
      const { data: res } = await this.$http.get("categories")
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类数据失败！")
      }
      this.catelist = res.data
      //   console.log(this.catelist)
    },
    //级联选择器选中项变化，会触发这个函数
    handleChange() {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    //标签页切换函数
    beforeTabLeave(activeName, oldActiveName) {
      // console.log('即将离开的标签页名字是'+oldActiveName);
      // console.log('即将进入的标签页名字是'+activeName);
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择商品分类！")
        return false
      }
    },
    //商品切换 参数 函数
    async tabClicked() {
      // console.log(this.activeIndex)
      //证明访问的是动态参数面板
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数列表失败!")
        }
        // console.log(res.data)
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(",")
        })
        this.manyTableData = res.data
        // console.log(this.manyTableData)
      }
      //   静态属性
      else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error("获取静态参数列表失败!")
        }
        console.log(res.data, "胖胖")
        this.onlyTableData = res.data
      }
    },
    //处理图片预览效果
    handlePreview(file) {
      console.log(file)
      this.preciwPath = file.response.data.url
      this.previewVisible=true
    },
    //移除图片的操作
    handleRemove(file) {
      console.log(file)
      //1.获取将要删除的图片的临时路径
      const filePath = file.response.data.tmp_path
      //2.从pics 数组中，找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex((x) => x.pic === filePath)
      //3.调用数组的 splice 方法，把图片信息对象，从pics 数组中移除
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    //监听图片上传成功的时间
    handleSuccess(response) {
      console.log(response)
      //1.拼接得到一个图片信息对象
      const picInfo = {
        pic: response.data.tmp_path,
      }
      //2.将图片信息对象 push到pics数组中
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    //添加商品
    add(){
        // console.log(this.addForm);
        this.$refs.ruleFormRef.validate(
            async valid => {
                if(!valid){
                    return this.$message.error('请填写必要的表单项！')
                }
                //执行添加的业务逻辑 数组该字符串
                //深拷贝 lodash cloneDeep(obj)
                const form = _.cloneDeep(this.addForm)
                form.goods_cat=form.goods_cat.join(',')
                //处理动态参数
                this.manyTableData.forEach(item =>{
                    const newInfo = {
                        attr_id:item.attr_id, 
                        attr_value:item.attr_vals.join('')
                    }
                    this.addForm.attrs.push(newInfo)
                })
                //处理静态属性
                  this.onlyTableData.forEach(item =>{
                       const newInfo ={
                           attr_id:item.attr_id,
                           attr_value:item.attr_vals
                       }
                       this.addForm.attrs.push(newInfo)
                    //    console.log(this.addForm.attrs)
                  })
                  form.attrs = this.addForm.attrs
                console.log(form);

                //发起请求添加商品
                //商品的名称，必须是唯一的
                const {data:res} = await this.$http.post('goods',form)
                if(res.meta.status !==201){
                    return this.$message.error('添加商品失败！')
                }
                this.$message.success('添加商品成功！')
                //编程式导航跳转
                this.$router.push('/goods')
            }
        )
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>

<style scoped lang="less">
.el-steps {
  margin: 15px 0;
}
.el-step__main {
  font-size: 13px;
}
.fuxiam_1 {
  margin: 0 10px 0 0 !important;
}
.tu_yulan{
    width:'100%'
}
.tj_an{
    margin-top: 15px;
}
</style>
